A device for causing brain impact or stress wave injury in small animals

Abstract

The present invention proposes a small animal cranial impact or stress wave injury device, comprising a fixed guide rail, an impact slider slidably connected to the guide rail, and an impact head and a stress wave shaper for impacting the animal, which are detachably connected to the impact slider and move therewith. The impact slider can be selectively connected to one of the impact head and the stress wave shaper. A controller controls a battery unit to store energy in an energy storage capacitor unit, which supplies power to an electromagnetic acceleration coil. An impact magnet column is disposed within a magnet column operating conduit. Under the action of the electromagnetic force generated by the electromagnetic acceleration coil, the impact magnet column moves within the magnet column operating conduit and generates an impact force with the impact slider. The injury device of the present invention has an impact load mode and a stress wave mode. People can select the impact load mode or the stress wave mode according to actual conditions, providing more load modes for small animal injury experiments and improving the practicality of the injury device.

Description

Technical Field

[0001] The invention belongs to the field of animal injury experiments, and in particular relates to a device for causing brain impact or stress wave injury in small animals. Background Art

[0002] With the advancement of industrialization, various types of trauma, such as traffic injuries and falls from heights, have increased dramatically worldwide. Approximately 5 million people die annually from various types of trauma worldwide. Studying the pathophysiology of various types of trauma through animal experiments is of great clinical significance and can provide a strong theoretical basis for improving the prognosis of trauma patients.

[0003] An efficient and stable animal impact model is a crucial tool and foundation for conducting traumatology, clinical practice, and prevention research. Traditional animal impact injury devices primarily rely on high-pressure gas-driven impactors, which then strike specific animal parts to cause injury. Alternatively, they utilize energy sources such as drops or pendulums. These devices can only simulate injuries caused by impact loads, not other loads, resulting in a limited number of injury modes. Furthermore, these devices are typically large, making them difficult to miniaturize and port. Summary of the Invention

[0004] The present invention aims to solve the technical problems existing in the prior art. The purpose of the present invention is to provide a device for treating cranial impact or stress wave injuries in small animals.

[0005] To achieve the above-mentioned objectives, the present invention adopts the following technical solutions: a small animal head impact or stress wave injury device, comprising an electromagnetic impact generating mechanism and an impact conversion mechanism mounted on a base; the impact conversion mechanism comprises a guide rail mounted on the base, an impact slider slidably connected to the guide rail, and an impact head and a stress wave shaper for impacting the animal that are detachably connected to the impact slider and move therewith, the impact slider being selectively connected to one of the impact head and the stress wave shaper; the electromagnetic impact generating mechanism comprises a controller, an electromagnetic force generating component and an impact magnet column, the electromagnetic force generating component generates electromagnetic force, and the impact magnet column can generate an impact force with the impact slider under the action of the electromagnetic force, causing the impact slider to move on the guide rail; the injury device has an impact load mode and a stress wave mode, in which, in the impact load mode, the impact head is connected to the impact slider, the impact magnet column impacts the impact slider and causes the impact slider to move on the guide rail; in the stress wave mode, the stress wave shaper is connected to the impact slider, the impact magnet column impacts the impact slider, and the impact slider does not slide on the guide rail.

[0006] In the above technical solution, the injury device has an impact load mode and a stress wave mode. People can choose the impact load mode or the stress wave mode according to actual conditions, providing more load modes for small animal injury tests and improving the practicality of the injury device.

[0007] In a preferred embodiment of the present invention, the head of the impact head is cylindrical, spherical, triangular pyramidal or conical, and the head of the stress wave shaper is cylindrical, spherical, triangular pyramidal or conical.

[0008] In the above technical solution, the shape of the impact head can be changed to meet different experimental requirements; the cross-sectional shape of the stress wave shaper can be changed to generate stress waves of different forms to meet the pressure requirements.

[0009] In a preferred embodiment of the present invention, a turntable is rotatably connected to the impact slider, and a plurality of stress wave shapers and impact heads are circumferentially installed on the turntable at intervals.

[0010] In the above technical solution, different stress wave shapers and impact heads are selected by rotating the turntable, which is simple to operate.

[0011] In a preferred embodiment of the present invention, the rear end of the impact slider is fixedly connected to an impact transducer column. Under the action of the electromagnetic force generated by the electromagnetic acceleration coil, the impact magnet column can move in the magnet column running pipe and generate impact force with the impact transducer column.

[0012] In the above technical solution, by providing the impact transducer column, the impact slider impacts the magnet column and the impact transducer column instead of directly colliding with the impact slider, thereby improving the service life of the impact slider.

[0013] In a preferred embodiment of the present invention, the electromagnetic force generating component includes a magnet column running pipe, an energy storage capacitor unit, a battery unit for charging the energy storage capacitor unit, and an electromagnetic acceleration coil. The controller controls the battery unit to store energy for the energy storage capacitor unit, and the energy storage capacitor unit supplies power to the electromagnetic acceleration coil. The impact magnet column is arranged in the magnet column running pipe. Under the action of the electromagnetic force generated by the electromagnetic acceleration coil, the impact magnet column can move in the magnet column running pipe and generate impact force with the impact slider.

[0014] In the above technical solution, a battery cell is used as an energy storage device, which has a certain degree of portability. The energy storage capacitor unit powers the electromagnetic acceleration coil. The voltage of the energy storage capacitor unit can be adjusted according to actual conditions (i.e., the driving voltage is adjustable). The driving force is proportional to the driving voltage. The magnitude of the impact load and stress wave load can be adjusted according to the voltage of the energy storage capacitor unit. The relationship is linear within a certain range, which can achieve stable control of the impact load and stress wave load, and has good repeatability.

[0015] In another preferred embodiment of the present invention, a supporting slider located behind the slider is also slidably connected to the guide rail, and the supporting slider has a through hole set through the front and back. The front end of the magnet column running pipe is fully or partially inserted into the through hole, and the impact magnet column can pass through the through hole.

[0016] In the above technical solution, a support slider is provided to support the front end of the magnet column running pipe, thereby improving the stability of the impact magnet column running in the magnet column running pipe.

[0017] In another preferred embodiment of the present invention, the energy storage capacitor unit includes a plurality of energy storage capacitors arranged in series, and the energy storage capacitors in series as a whole power the electromagnetic acceleration coil; or the energy storage capacitor unit includes a plurality of energy storage capacitors arranged in parallel, and the electromagnetic acceleration coil includes a plurality of electromagnetic accelerator coils, each energy storage capacitor is connected to a corresponding electromagnetic accelerator coil, and the plurality of electromagnetic accelerator coils are arranged at intervals along the length direction of the magnet column running pipe. When the impact magnet column runs to the entrance of the corresponding electromagnetic accelerator coil, the controller controls the energy storage capacitor to start powering the electromagnetic accelerator coil connected to it.

[0018] In the above technical solution, when the energy storage capacitor unit includes multiple energy storage capacitors arranged in series, it adopts a modular design with good scalability and maintainability; when the energy storage capacitor unit includes multiple energy storage capacitors arranged in parallel, the energy storage capacitors and the electromagnetic accelerator coils are combined into a pair in pairs to achieve step-by-step acceleration, increase the final speed of the impact magnet column, increase its kinetic energy, increase the impact force of the impact head, make the conversion of electrical energy into mechanical energy more efficient, reduce the electrical energy consumed by each impact loading, and save more energy.

[0019] In another preferred embodiment of the present invention, the battery unit is a 12V lithium battery; and / or the battery unit is connected to a power-off protection switch; and / or a boost circuit is connected between the battery unit and the energy storage capacitor unit.

[0020] In the above technical solution, a 12V lithium battery is used as the energy supply, which greatly reduces the volume and improves the safety of the overall experiment; by setting a power-off protection switch, the connection of the battery unit can be disconnected, thereby improving the safety of the injury-causing device itself; and the battery unit is used to charge the energy storage capacitor unit through a boost circuit.

[0021] In another preferred embodiment of the present invention, the electromagnetic acceleration coil surrounds the outside of the magnet column running pipe.

[0022] In another preferred embodiment of the present invention, the injury-causing device further comprises a shell, in which the impact conversion mechanism and the electromagnetic impact generating mechanism are located, the front end of the shell having a front limit plate for limiting the front end of the impact slider, the rear end of the shell having a rear limit plate for limiting the rear end of the impact magnet column, and the shell being provided with an opening corresponding to the impact head / stress wave shaper, and the impact head being able to extend in and out through the opening.

[0023] In the above technical solution, the shell connects and protects various components, and it itself can also serve as a limit for the front end of the impact slider to ensure the safety of impact loading and ensure that the impact head / stress wave shaper will not be out of control under drastic energy changes to produce other adverse effects. The shell can also serve as a limit for the impact magnet column to move backward to the starting point.

[0024] Compared with the existing technology, the preferred technical solution of the present invention has the following beneficial effects:

[0025] 1) This injury device utilizes electromagnetic force, which allows for more precise regulation of impact loads and stress wave loads compared to traditional high-pressure gas impact devices. High-pressure gas is significantly affected by ambient temperature, humidity, airflow, and airway conditions, resulting in significant fluctuations in impact loads. This results in low experimental repeatability and difficulty in precisely controlling loading. Electromagnetic force, on the other hand, has relatively low environmental requirements and offers excellent experimental repeatability, facilitating the acquisition of stable experimental data.

[0026] 2) Compared with traditional high-pressure gas impact devices, this injury device does not require an external high-pressure gas storage tank. Instead, it uses a 12V lithium battery as an energy supply, which greatly reduces the volume and improves the safety of the overall experiment.

[0027] 3) Compared with traditional high-pressure gas impact devices, the transportation of high-pressure gas cylinders is full of dangers during transportation, which is very likely to cause serious accidents such as explosions. The lithium battery used in this injury device has a maximum voltage of only 12V. Its high-voltage charging is fast and its discharge is rapid. During other periods, the voltage of the injury device is low, and a power-off protection switch is provided to disconnect the lithium battery connection, thereby improving the safety of the experimental device itself.

[0028] 4) The injury-causing device is lightweight and compact, with a high degree of modularity and good maintainability, which is conducive to the development of field experiments. In addition, it consumes less power per impact loading, can be used multiple times, and has a long operating time.

[0029] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of the embodiments with reference to the accompanying drawings, in which:

[0031] Figure 1 This is a schematic diagram of the appearance and structure of a small animal injuring device based on electromagnetic force in Example 1 of the present application.

[0032] Figure 2This is a schematic diagram of the internal structure of a small animal injury device based on electromagnetic force in the first embodiment of the present application. Figure 1 , the impact head is connected to the impact slider, and the impact slider is in the initial state.

[0033] Figure 3 This is a schematic diagram of the internal structure of a small animal injury device based on electromagnetic force in the first embodiment of the present application. Figure 2 , the impact head is connected to the impact slider, and the impact slider is in the initial state.

[0034] Figure 4 This is a schematic diagram of the internal structure of a small animal injury device based on electromagnetic force in the first embodiment of the present application. Figure 3 , the stress wave shaper is connected to the impact slider.

[0035] Figure 5 This is a schematic diagram of installing multiple impact heads and multiple impact sliders on the impact slider in embodiment 2 of the present application.

[0036] The figure marks in the drawings of the specification include: impact conversion mechanism 10, guide rail 11, slider 12, impact head 13, impact transducer column 14, stress wave shaper 15, support slider 16, through hole 161, electromagnetic impact generating mechanism 20, controller 21, energy storage capacitor unit 22, energy storage capacitor 221, battery unit 23, electromagnetic acceleration coil 24, electromagnetic accelerator coil 241, magnet column running pipe 25, impact magnet column 26, shell 30, front limit plate 31, rear limit plate 32, opening 33, base 40, turntable 50. DETAILED DESCRIPTION

[0037] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0038] In the description of the present invention, it should be understood that the terms "longitudinal", "transverse", "vertical", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0039] In the description of the present invention, unless otherwise specified and limited, it should be noted that the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a mechanical connection or an electrical connection, or it can be the internal communication between two components. It can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to the specific circumstances.

[0040] Example 1

[0041] This embodiment provides a device for causing cranial impact or stress wave injury in small animals, as shown in FIG1- Figure 3 As shown, in a preferred embodiment of the present invention, it includes an electromagnetic impact generating mechanism 20 and an impact converting mechanism 10 installed on a base 40 .

[0042] The impact conversion mechanism 10 is arranged at the front side of the electromagnetic impact generating mechanism 20. The impact conversion mechanism 10 includes a guide rail 11 mounted on the base 40, an impact slider 12 slidably connected to the guide rail 11, and an impact head 13 and a stress wave shaper 15 that are detachably connected to the impact slider 12 and move therewith for impacting the skull of a small animal (such as a rat, mouse, rabbit, or other small animal). The impact slider 12 is selectively connected to one of the impact head 13 and the stress wave shaper 15. The impact head 13 / stress wave shaper 15 is mounted at the front end of the impact slider 12. The head shape of the impact head 13 includes but is not limited to cylindrical, spherical, triangular pyramidal, or conical, and should be designed and selected according to actual conditions. The head shape of the stress wave shaper 15 includes but is not limited to cylindrical, spherical, triangular pyramidal, or conical. The cross-sectional shape of the stress wave shaper 15 is interchangeable and can generate stress waves of different forms to meet the pressure application requirements.

[0043] The electromagnetic impact generating mechanism 20 includes a controller 21, an electromagnetic force generating component and an impact magnet column 26. The electromagnetic force generating component generates electromagnetic force. Under the action of the electromagnetic force, the impact magnet column 26 can generate an impact force with the impact slider 12, causing the impact slider 12 to move on the guide rail 11.

[0044] The wounding device of the present invention has an impact load mode and a stress wave mode.

[0045] like Figure 2 and Figure 3As shown, in the impact loading mode, the impact head 13 is connected to the impact slider 12. Initially, the impact slider 12 is in the middle or rear portion of the guide rail 11, ensuring that the impact slider 12 has a forward stroke on the guide rail 11. Under the action of electromagnetic force, the impact magnet column 26 moves from back to front, impacting the impact slider 12. The kinetic energy of the impact magnet column 26 is quickly absorbed by the impact slider 12, and the impact slider 12 carries the impact head 13 forward along the guide rail 11. The impact head 13 on the impact slider 12 impacts the target position, causing a craniocerebral injury to the small animal.

[0046] like Figure 4 As shown, in stress wave mode, the stress wave shaper 15 is connected to the impact slider 12. Initially, the impact slider 12 is at the front end of the guide rail 11 and has no forward travel on the guide rail 11. Under the action of electromagnetic force, the impact magnet column moves from back to front, impacting the impact slider 12. The kinetic energy of the impact magnet column is quickly absorbed by the impact slider 12 and propagates forward to the stress wave shaper 15 in the form of a stress wave. The stress wave shaper 15 receives the stress wave and transmits it to the target area, causing injury.

[0047] like Figure 2 As shown, in another preferred embodiment, the electromagnetic force generating component includes a magnet column running pipe 25, an energy storage capacitor unit 22, a battery unit 23 for charging the energy storage capacitor unit 22, and an electromagnetic acceleration coil 24. The controller 21 controls the battery unit 23 to store energy in the energy storage capacitor unit 22, and the energy storage capacitor unit 22 supplies power to the electromagnetic acceleration coil 24. The impact magnet column is disposed in the magnet column running pipe 25. Under the action of the electromagnetic force generated by the electromagnetic acceleration coil 24, the impact magnet column can move in the magnet column running pipe 25 and generate an impact force with the impact slider 12, causing the impact slider 12 to move on the guide rail 11.

[0048] Preferably, the rear end of the impact slider 12 is also fixed (preferably clamped) with an impact transducer column 14, which is a bearing steel column. Under the action of the electromagnetic force generated by the electromagnetic acceleration coil 24, the impact magnet column 26 can move in the magnet column running pipe 25 and generate impact force with the impact transducer column 14.

[0049] In this embodiment, the energy storage capacitor unit 22 is located below the electromagnetic acceleration coil 24, the battery unit 23 is located behind the energy storage capacitor unit 22, and the controller 21 is configured as a flat plate structure, located between the energy storage capacitor unit 22 and the electromagnetic acceleration coil 24. The magnet column operating conduit 25 is made of a hollow carbon fiber tube and is located above the controller 21. The electromagnetic acceleration coil 24 surrounds the magnet column operating conduit 25.

[0050] In this embodiment, the battery cell 23 is a 12V lithium battery. A power-off switch and a voltage charging button are connected to the battery cell 23. A boost circuit is connected between the battery cell 23 and the energy storage capacitor unit 22. The controller 21 uses the 12V lithium battery to charge the energy storage capacitor unit 22 via the boost circuit. The power supply of the energy storage capacitor unit 22 can be increased to up to 300V. During the experiment, the voltage of the energy storage capacitor unit 22 can be adjusted according to the size of the impact load, thereby controlling the impact force on specific parts of the animal.

[0051] When using this wounding device to conduct wounding experiments on specific parts of small animals, the device can be initially tilted backward and downward to allow the impact magnet column 26 to move to the rearmost end (the starting point of the impact magnet column 26) in the magnet column running channel 25 without leaving the magnet column running channel 25. The device is then leveled to make the magnet column running channel 25 horizontal. The impact load mode or stress wave mode is then selected based on the experimental requirements. Specifically, the corresponding impact head 13 or stress wave shaper 15 must be connected, and the impact slider 12 must be adjusted to the appropriate position.

[0052] Next, the controller 21 controls the battery unit 23 to charge the energy storage capacitor unit 22 (specifically, this can be achieved by setting a voltage charging button), charging the energy storage capacitor unit 22 to a set voltage. The injury-causing device is then activated (specifically, a start button can be provided). The energy storage capacitor unit 22 supplies power to the electromagnetic acceleration coil 24, which then conducts and generates a magnetic field. Under the electromagnetic force generated by the electromagnetic acceleration coil 24, the impact magnet column 26 moves forward within the magnet column operating conduit 25. The front end of the impact magnet column 26 collides with the impact transducer column 14. The kinetic energy of the impact magnet column 26 is received by the impact transducer column 14 and transferred to the impact head 13 or the stress wave shaper 15 via the impact slider 12.

[0053] like Figure 2 and Figure 3 As shown, in another preferred embodiment, the guide rail 11 is also slidably connected to a support slider 16 located behind the impact slider 12. The support slider 16 has a through hole 161 that is set through the front and back. The front end of the magnet column running pipe 25 is fully or partially inserted into the through hole 161, and the impact magnet column 26 can pass through the through hole 161.

[0054] like Figure 2As shown, in the impact load mode, the impact head 13 is connected to the impact slider 12. Initially, the impact slider 12 is at the front of the guide rail 11 and has a forward stroke on the guide rail 11. The support slider 16 is at the rear of the guide rail 11, and the front end of the magnet column running channel 25 is fully or partially inserted into the through hole 161. Under the action of the electromagnetic force, the impact magnet column 26 moves forward in the magnet column running channel 25 and passes through the through hole 161. The impact magnet column 26 impacts the impact transducer column 14, and the two produce an elastic collision, as shown in FIG. Figure 3 As shown, the kinetic energy of the impact magnet column 26 is quickly received by the impact transducer column 14 and transferred to the impact slider 12, causing the impact slider 12 to move forward on the guide rail 11. The impact head 13 on the impact slider 12 then impacts the target position. After the impact loading is completed, the distance between the rear end of the impact transducer column 14 and the front end of the magnet column running channel 25 is greater than the length of the impact magnet column 26, thereby preventing the impact magnet column from flying out of the magnet column running channel 25.

[0055] like Figure 4 As shown, in stress wave mode, the stress wave shaper 15 is connected to the impact slider 12. Initially, the impact slider 12 is at the front end of the guide rail 11 and has no forward travel on the guide rail 11. The support slider 16 is in the middle of the guide rail 11. The impact slider 12 and the impact slider 16 clamp the impact transducer post 14. Under the action of electromagnetic force, the impact magnet post moves forward and impacts the impact transducer post 14, generating an elastic collision. The kinetic energy of the impact magnet post is quickly absorbed by the impact transducer post 14 and propagates forward in the form of a stress wave to the impact slider 12 and stress wave shaper 15. The stress wave shaper 15 receives the stress wave and transmits it to the target area, causing injury.

[0056] like Figure 2 As shown, in one embodiment, the energy storage capacitor unit 22 includes a plurality of energy storage capacitors 221 connected in series, and the energy storage capacitors 221 connected in series as a whole supply power to the electromagnetic acceleration coil 24 .

[0057] like Figure 2 As shown, in another embodiment, the energy storage capacitor unit 22 includes a plurality of energy storage capacitors 221 arranged in parallel, and the electromagnetic acceleration coil 24 includes a plurality of electromagnetic accelerator coils 241. Each energy storage capacitor 221 is connected to a corresponding electromagnetic accelerator coil 241, and the plurality of electromagnetic accelerator coils 241 are arranged at intervals along the length direction of the magnet column running pipe 25. When the impact magnet column runs to the entrance of the corresponding electromagnetic accelerator coil 241, the controller 21 controls the energy storage capacitor 221 to start powering the electromagnetic accelerator coil 241 connected thereto, thereby achieving step-by-step acceleration, increasing the final speed of the impact magnet column, increasing its kinetic energy, and increasing the impact force of the impact head 13.

[0058] like Figure 2 As shown, in another preferred embodiment, the impact slider 12 adopts a modular design, so that it can be replaced according to actual conditions, and the impact transducer column 14 connected to the impact slider 12 is a bearing steel column, which greatly improves the life of the impact slider 12. The impact head 13 and the stress wave shaper 15 at the front end of the impact slider 12 are threadedly connected to the impact slider 12, thereby conveniently replacing the impact head 13 and the stress wave shaper 15 with various shapes and cross-sections according to actual conditions.

[0059] like Figure 1 and Figure 2 As shown, in another preferred embodiment, the injury-causing device further comprises a rectangular housing 30, with a base 40 fixedly mounted on the bottom of the housing 30, or the base 40 is integrally formed with the bottom of the housing 30. The impact conversion mechanism 10 and the electromagnetic impact generating mechanism 20 are located within the housing 30. The front end of the housing 30 includes a front stop plate 31 for limiting the front end of the impact slider 12, and the rear end of the housing 30 includes a rear stop plate 32 for limiting the rear end of the impact magnet column. The front stop plate 31 on the front side of the housing 30 has an opening 33 corresponding to the impact head 13 / stress wave shaper 15, through which the impact head 13 / stress wave shaper 15 can extend.

[0060] In this embodiment, the housing 30 connects and protects the various components. It also serves as a limiter for the front end of the impact slider 12 (of course, a limiter structure can also be provided on the guide rail 11), ensuring the safety of impact loading and ensuring that the impact head 13 / stress wave shaper 15 will not lose control under drastic energy changes and cause other adverse effects. Furthermore, when the impact magnet column moves to its starting point by tilting backward and downward, the rear end of the impact magnet column is limited by the rear limit plate 32 of the housing 30, preventing the impact magnet column from sliding out of the magnet column running channel 25.

[0061] Example 2

[0062] The structural principle of this embodiment is basically the same as that of the first embodiment, except that the connection method of the impact head 13 and the stress wave shaper 15 with the impact slider 12 is different. Figure 5 As shown, the front end of the impact slider 12 is rotatably connected to a turntable 50, and a plurality of stress wave shapers 15 and impact heads 13 are installed circumferentially at intervals on the turntable 50. Figure 5 As shown, four stress wave shapers 15 and four impact heads 13 are installed. An open slot corresponding to the position of the lowest stress wave shaper 15 / impact head 13 is opened on the front limit plate 31. The setting of the open slot ensures that during the rotation of the turntable 50, all stress wave shapers 15 and impact heads 13 will not interfere with the front limit plate 31.

[0063] In this embodiment, the rear end of the turntable 50 has eight grooves corresponding to the four stress wave shapers 15 and the four impact heads 13. The front end of the impact slider 12 has a protrusion that cooperates with the grooves and is elastically connected to the impact slider 12 via a spring. When the stress wave shapers 15 / impact heads 13 rotate to their lowest position, the protrusions snap into the corresponding grooves, securing the position of the turntable 50 and the impact slider 12. This is conventional technology and will not be described in detail here.

[0064] Throughout this specification, reference to terms such as "preferred embodiment," "one embodiment," "some embodiments," "example," "specific example," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0065] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the claims and their equivalents.

Claims

1. A device for treating small animal cranial impact or stress wave injury, characterized in that: It includes an electromagnetic shock generating mechanism and a shock converting mechanism mounted on a base; The impact conversion mechanism includes a guide rail mounted on a base, an impact slider slidably connected to the guide rail, and an impact head and a stress wave shaper detachably connected to the impact slider and moving therewith for impacting the animal, wherein the impact slider is selectively connected to one of the impact head and the stress wave shaper; The electromagnetic impact generating mechanism includes a controller, an electromagnetic force generating component and an impact magnet column. The electromagnetic force generating component generates electromagnetic force. Under the action of the electromagnetic force, the impact magnet column can generate an impact force with the impact slider, causing the impact slider to move on the guide rail. The rear end of the impact slider is fixedly connected to an impact transducer column. Under the action of the electromagnetic force generated by the electromagnetic force generating component, the impact magnet column can move in the magnet column running pipe and generate an impact force with the impact transducer column. The guide rail is also slidably connected to a support slider located behind the impact slider, and the support slider has a through hole set through the front and back, and the front end of the magnet column running pipe is fully or partially inserted into the through hole, and the impact magnet column can pass through the through hole; The injury-causing device has an impact load mode and a stress wave mode. In the impact load mode, the impact head is connected to the impact slider, and the impact magnet column impacts the impact slider and causes the impact slider to move on the guide rail; in the stress wave mode, the stress wave shaper is connected to the impact slider, and the impact magnet column impacts the impact slider and the impact slider does not slide on the guide rail.

2. A device for injuring small animals' cranial brain with impact or stress waves according to claim 1, characterized in that: The head of the impact head is cylindrical, spherical, triangular pyramidal or conical, and the head of the stress wave shaper is cylindrical, spherical, triangular pyramidal or conical.

3. A device for injuring small animals' cranial brain with impact or stress waves according to claim 2, characterized in that: The impact slider is rotatably connected to a turntable, and a plurality of stress wave shapers and impact heads are circumferentially installed on the turntable at intervals.

4. A device for causing craniocerebral impact or stress wave injury in small animals according to any one of claims 1 to 3, characterized in that: The electromagnetic force generating component includes a magnet column running pipe, an energy storage capacitor unit, a battery unit for charging the energy storage capacitor unit, and an electromagnetic acceleration coil. The controller controls the battery unit to store energy for the energy storage capacitor unit, and the energy storage capacitor unit supplies power to the electromagnetic acceleration coil. The impact magnet column is arranged in the magnet column running pipe. Under the action of the electromagnetic force generated by the electromagnetic acceleration coil, the impact magnet column can move in the magnet column running pipe and generate an impact force with the impact slider.

5. The device for injuring small animals' cranial brain with impact or stress waves according to claim 4, characterized in that: The energy storage capacitor unit includes a plurality of energy storage capacitors arranged in series, and the energy storage capacitors connected in series as a whole supply power to the electromagnetic acceleration coil; Alternatively, the energy storage capacitor unit includes a plurality of energy storage capacitors arranged in parallel, the electromagnetic acceleration coil includes a plurality of electromagnetic accelerator coils, each energy storage capacitor is connected to a corresponding electromagnetic accelerator coil, and the plurality of electromagnetic accelerator coils are arranged at intervals along the length direction of the magnet column running pipe. When the impact magnet column runs to the entrance of the corresponding electromagnetic accelerator coil, the controller controls the energy storage capacitor to start powering the electromagnetic accelerator coil connected to it.

6. The device for injuring small animals' cranial brain with impact or stress waves according to claim 4, characterized in that: The battery unit is a 12V lithium battery; and / or the battery unit is connected to a power-off protection switch; and / or a boost circuit is connected between the battery unit and the energy storage capacitor unit.

7. The device for injuring small animals' cranial brain with impact or stress waves according to claim 4, characterized in that: The electromagnetic acceleration coil surrounds the outside of the magnet column running pipe.

8. A device for causing craniocerebral impact or stress wave injury in small animals according to any one of claims 1 to 3, characterized in that: It also includes a shell, in which the impact conversion mechanism and the electromagnetic impact generation mechanism are located. The front end of the shell has a front limit plate for limiting the front end of the impact slider, and the rear end of the shell has a rear limit plate for limiting the rear end of the impact magnet column. The shell is provided with an opening corresponding to the impact head / stress wave shaper, and the impact head can be extended in and out through the opening.

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